Feasibility evaluation of pre-pressed spring devices for vertical isolation of single-layer spherical lattice shell structures

Peng, Zhuang; Luyao, Wei; Wang, Wei; Han, Moonsik

doi:10.1016/j.soildyn.2022.107308

Cited by 8 publications

(2 citation statements)

References 45 publications

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“…To alleviate the adverse effects of subway vibration, buildings must take certain isolation measures. In particular, large-span structures are sensitive to multicomponent ground motions, especially vertical vibrations, and require seismic isolation bearings with low vertical stiffness [3][4][5]. However, the effect of traditional foundation isolation techniques on vertical-dominated vibration is limited [1].…”

Section: Introductionmentioning

confidence: 99%

“…Cesmeci [14,15] proposed a three-dimensional (3D) seismic isolation system consisting of a magnetorheological damper and bilinear liquid springs in a single unit that acts as a vertical gradual building isolation system to prevent the structure from rocking. Three-dimensional (3D) seismic isolation bearings are suitable for synchronized seismic isolation in both the horizontal and vertical directions, such as spring bearings [4,16], lead rubber bearings [17], high-damping rubber bearings [18], and steel-confined rubber bearings [19]. The results of studies on the mesh frame structure show that the bearing has significant seismic isolation and damping effects both horizontally and vertically [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Novel Anti-Rocking Bearing

Yang,

Kong,

et al. 2024

Buildings

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To address the issue of severe rocking phenomena under seismic conditions in structures equipped with steel spring isolation bearings, this paper investigates a novel type of anti-rocking bearing. Firstly, the structural configuration and working principle of the novel anti-rocking bearing are introduced, and a design method for bearing parameters is proposed. Secondly, a finite element analysis model is established using SAP2000-v20 software to conduct nonlinear dynamic time–history analysis under seismic loading. The analysis results show that the structural arrangement of the novel anti-rocking bearing reduces both the vertical displacement difference and the rocking angle of the isolation layer. The bearing exhibits a certain level of anti-rocking effect, but it may cause significant tensile forces in some bearings. The effectiveness of the anti-rocking effect improves as the stiffness of the steel tension rod in the bearing increases. For structures equipped with the novel anti-rocking bearing, the acceleration amplifies under most cases, with amplification coefficients ranging from 0.82 to 1.55. Through the finite element simulation of the bearing, the mechanical properties of the bearing are essentially the same as the theoretical analysis results.

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